Repair and testing device for ply materials



July 8, 1941.

W. A. MONAGHAN REPAIR AND TESTING DEVICE FOR PLY MATERIALS Filed July 19, 1939 slr-wanton fonageaw Patented July'S, 1941 ITE.

STATES REPAIR. AND TESTING DEVECE FOR PLY MATERIALS 2 Claims.

This invention relates to an injecting device for testing fabricated material.

An object of the invention is the provision of a device which is adapted to be usedV as a testing device for determining Whether there is a separation between theI plies of an automobile tire by injecting a fluid through a sharp pointed nozzle as it is being forced transversely through the plies.

Another object of the invention is the provision of a device for detecting the separation of plies in a tire by injecting fluids from a penetrating nozzle as the nozzle is being forced through the thickness of the wall of the tire, the injected fluid causing expansion of the plies of the tire where there is a separation, while the pressure device which is employed for creating a pressure is being retained against movemeent as long as perforations in the penetrating/nozzle are sealed by the secured plies, the fluid being released when the penetrating nozzle coincides with a separation in the plies so that the release of pressure will be indicated on the pressure creating device.

A further object of the invention is the provision of a devicefor detecting separated plies in automobile tires by means of a fluid under pressure which will expand the separated plies', the device also being used fory injecting sealing material suchY as solvents or a rubber solution be- I tween the separated plies for connecting the plies together, the tester also being employed for removing excess solutions or other materials from the space between the separated plies.

This invention will be ylatest understood from a consideration of the following detailed description, in view of the Aaccompanying drawing forming a part of the specification; nevertheless, it is to be understood that the invention is not confined to the disclosure, being susceptiblel of such changes and modications as define no Inaterial departure from the salient features. of the invention as expressed in the appended claims.

In the drawing:

Figure 1. is a vertical section of a combined tester and injector constructed in. accordance with the principles of my invention.

Figure 2 is a longitudinal section takenonthe line 2-2 of Figure I.

Figure 3 is a longitudinal section taken on the line 3 3 of Figure 1.

Figure 4 is a view in perspective off a penetrating nozzle which is removably connected to the tester shown in Figure 1.

Referring more particularly to the drawing I!) designates a container which is adapted to be filled or partially iilled with a fluid as shown at Il. The upper end oi the container is provided with an opening i2 closed by a cap i3 which is screwed upon the external threads lll of the reduced upper end l5 of the container. However, the container may have the same diameter throughout.

The cap or cover 3 is provided with'an upstanding enlargementl I6 having one end as' shown at l1 provided with a vertical face for a purpose which will be presently explained. A gasket i8 is located between the'upper end of the container l!) and the inner face off the cap A stern or pipe 20 has a reduced end, as shown at 2|, which is screwed into the an internally threaded pocket 22 formed in the enlargement I6 of the cap i3 with the outer end of the pocket being located in the ilat face i1 of the enlargement l5. This stern is provided with a longitudinal axial passage 23 which extends from its outer reduced threaded end 2li through the inner end 2 l. f

A passage 25 extends laterally through the enlargement it and has its outer end in communication with the passage 23; The inner end of the passage 25 terminates at an internally threaded pocket 2S- in the cap E3 so that the passages 2:3 and- 25 will be in communication with an axial passage 2l in a pipe 28 which has its upper-end threaded into the pocket 26.

A tube Sli has its upper end, as shown at 3l, secured tor the innerY face of the cap or cover t3 and this tube has its longitudinal axis in alinemen-t with the'longitudinal axis of' the pipe 28.

The lower end or"V the tube 3131s closed and the pipe 23 extends through the vlower closed end 31a of the tube 3%. Below the closed end Sla the tube 3@ is provided with a piston generally designated by the numeral 32 vand this piston is formed of a pair of opposed oups 3? and Sil which are held on to the lower threaded end of the pipe f2.8 ey means of a washer 35 and a nut 3B.

A cylinder 4l! is slidably mounted on the outer face of the tube 30 and is urged outwardly from said tube by means of a spring lil which is in engagement at one end with the piston 32, while the other end presses upon a ball valve Ll2 which normally closes a port 43 formed at the lower reduced end ill of the cylinder G. The said cylinder is adapted to be moved upwardly against the tension of the spring tly for reducing theH space between the piston 32 and the lower end 44 of the cylinder for placing fluid in the cylinder under pressure and forcing it through the pipe 28 and the passage 23 in the stem 20.

A rod 45 is secured at its lower end within a projection 46 formed on the side wall of the cylinder 4U. This rod extends upwardly through a passage in the cap I3 through a packing 41 and a gland 48 threaded into a pocket in the cap I3 at one side of the enlargement I6. The outer end of the rod is provided with a head 49.

An angularly shaped lever generally indicated by the numeral 56 has an operating handle 5I projecting downwardly and outwardly from the side walls of the container I0. The handle is provided with an elongated opening 52 which is adapted to be received by the stem 20 so that the handle at this point straddlessaid stem. The lever is provided with a projection or fulcrum 53 which is adapted to engage the nat face I1 of the enlargement I6 of the cap. The lever inoludes a downwardly turned arm 54 which is provided with an opening 55 to receive the rod 45. The head 49 of the rod rests upon the upper face of the attened section of the downturned portion of the lever 50. It will be noted that the passage 55 is of greater length than the diameter of the rod 45 so that the lever 5I! may be properly operated without placing any strain on the upper end of the rod 45.

A nozzle 55 has a longitudinal passage 5 alining with the passage 23 in the stem 20. The inner end of the nozzle has an internally threaded pocket 58 which is screwed on to the reduced threaded end 24 of the stem 29. The extreme outer end of the nozzle is pointed as shown at 59 and inwardly of this point is provided a plurality of perforations 69 which connect the passage 5l with the exterior of the nozzle.

The operation of my device is as follows:

Any suitable fluid may be placed in the container II! such as a solvent, a rubber solution or a chemical solution which when injected between the plies of a tire will cement the plies together after they have been separated by the fluid. After the parts are in the position shown in Figure 1, the penetrating point 59 which has a reduced diameter is forced into the wall of an automobile tire casing and after the perforations 6i) disappear beneath the outer surface of the tire the handle 5I is moved towards the container I to the position shown in dotted lines in Figure 1.

When the handle I is moved towards the container Io the lever 5I) through the down-turned portion will raise the rod 45 upwardly against the tension of the spring 4I and since the piston 32 is stationary the cylinder 49 will be moved upwardly with the spring 4I pressing against the ball valve 42 and maintaining said valve closed while placing the liquid in the cylinder under pressure. The fluid pressure will be extended through the pipe 28, stem and the nozzle 55. As long as the perforations SG are closed the pressure will be maintained equally throughout the connected parts.

When the perforations 50 pass any voids or separations between the plies of the automobile casing the pressure will be released and the fluid will pass between the plies and expand the same and this release of pressure will be indicated by the handle 5I so that the operator of the tester can determine immediately if the perforations 60 are in alinement with the voids in the casing. In this manner the device is not only used as a tester to determine where separations occur in the casing, but the fluid in the container may be a cement of a suitable type for application to the separated surfaces in the casing so that these separated parts will be cemented together.

When the handle 5I is operated the fingers of the operator may be extended around the casing IIJ and the palm of the hand will rest on the handle 5I and as the handle is moved to the dotted line position the fulcrum acting on the flat face I'I of the enlargement I6 will cause the end of the lever connected with the end of the rod 45 to be elevated.

When the lever 50 is released the spring 4I will move the cylinder 4!! downwardly. Towards the end of the stroke the uid will iiow past the Yvalve 42 into the cylinder 4I] for further application.

As has been stated the device is not only adapted to be used as a tester, but it may be employed to remove foreign matter, air and voids created by separated plies in a casing. The device may also be used for injecting a suitable solvent which will cause the separated plies to cement when the tester has been removed. The device may inject cementing materials into the voids between the separated plies during the testing operation so that when the nozzle is withdrawn and when the cement is allowed to harden the plies will be secured together. The nozzle 56 isI removably connected to the outer end of the stem 20 and the penetrating point has an extremely reduced diameter so that it will not in any way injure the casing.

I claim:

1. A device for detecting separation of rubber and plies in a tire comprising a container housing a fluid, a cap sealing the top of the container, a rod slidably mounted in the container and projecting through the cap, a movable cylinder connected to the inner end of the rod, a piston fixed to the cap and projecting into the cylinder, said cylinder having a port communicating with the container, a valve closing the port, a spring between the piston and valve, means causing reciprocation of the rod and cylinder with respect to the piston, a hollow stem projecting from the cap, means placing the stem in communication with the cylinder, and a penetrating nozzle on the free end of the stem having discharge openings near the outer end of said nozzle.

2. A device for detecting voids and separated plies in an automobile tire comprising a container housing a iiuid, a cap sealing the top of the container, means for creating a pressure on the uid within the container, a rod connected with the pressure creating means and projecting from the container, a lever having connections with the projecting end of the rod, a handle projecting at an angle from the lever and provided with a projection engaging the cap on the container, a hollow stem projecting from the cap and in communication with the interior of the container, the handle having an elongated slot receiving the stem, a curved shoulder at one end of the slot rockably mounted on the hollow stem and (zo-operating with the projection and the cap to act as a fulcrum. for operating the lever and a hollow nozzle secured to the free end of the stem and provided with a sharp point for penetrating transversely the walls of a tire, said nozzle having discharge openings located adjacent the penetrating point.

WILLIAM A; MONAGHAN. 

